如何在BigQuery中選擇多個自定義Firebase事件參數？

我將Firebase事件導出到BigQuery，現在我試圖從某個事件中選擇兩個參數。這裏是用於選擇一個參數查詢：如何在BigQuery中選擇多個自定義Firebase事件參數？

select event_dim.params.value.int_value as level_id 
from [com_company_appname_ANDROID.app_events_20161210] 
where event_dim.name = "level_replays_until_first_victory" and event_dim.params.key = "level_id"

兩個參數都是INT的值，所述第一參數的名稱爲level_id，並且第二參數是count。我想要顯示的第一列是level_id，第二列是count。

來源

2016-12-11 Luka Maške

下面將情況與BigQuery Standard SQL

SELECT 
    (SELECT params.value.int_value FROM x.params 
           WHERE params.key = 'level_id') AS level_id, 
    (SELECT params.value.int_value FROM x.params 
           WHERE params.key = 'count') AS count 
FROM `com_company_appname_ANDROID.app_events_20161210`, UNNEST(event_dim) AS x 
WHERE x.name = 'level_replays_until_first_victory'

參見Migrating from legacy SQL工作，如果你被卡住傳統的SQL

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2016-12-11 20:40:13

謝謝！這工作完美。 –

現在我們可以說我只想顯示「count = 5」的行，那麼在這種情況下，你會怎麼表達呢？ –

有很多方法。使我的回覆適合註釋 - 只需添加到查詢的最後一個突出顯示的語句AND（SELECT params.value.int_value FROM x.params WHERE params.key ='count'）= 5'。如果你有更多的問題 - 請不要使用評論問 - 而是請發佈新的問題，我們將很樂意幫助 –

我喜歡以前的解決方案！這是我提出的同樣問題的另一種解決方案。我歡迎評論哪些解決方案更高效/更便宜，爲什麼。

SELECT event_param1.value.int_value AS level_id, 
event_param2.value.int_value AS count 
FROM `com_company_appname_ANDROID.app_events_20161210`, 
UNNEST(event_dim) event, 
UNNEST(event.params) as event_param1, 
UNNEST(event.params) as event_param2 
WHERE event.name = 'level_replays_until_first_victory' 
AND event_param1.key = 'level_id' 
AND event_param2.key = 'count'

來源

2017-06-15 12:22:54 MSquare

另一種解決方案，我覺得挺方便的就是使用User Defined Functions to analyze user properties and event parameters

#Standard-SQL 

#UDF for event parameters 
CREATE TEMP FUNCTION paramValueByKey(k STRING, params ARRAY<STRUCT<key STRING, value STRUCT<string_value STRING, int_value INT64, float_value FLOAT64, double_value FLOAT64 >>>) AS (
    (SELECT x.value FROM UNNEST(params) x WHERE x.key=k) 
); 

#UDF for user properties 
CREATE TEMP FUNCTION propertyValueByKey(k STRING, properties ARRAY<STRUCT<key STRING, value STRUCT<value STRUCT<string_value STRING, int_value INT64, float_value FLOAT64, double_value FLOAT64>, set_timestamp_usec INT64, index INT64 > >>) AS (
    (SELECT x.value.value FROM UNNEST(properties) x WHERE x.key=k) 
); 

#Query the sample dataset, unnesting the events and turn 'api_version', 'round' and 'type_of_game' into columns 
SELECT 
    user_dim.user_id, 
    event.name, 
    propertyValueByKey('api_version', user_dim.user_properties).string_value AS api_version, 
paramValueByKey('round', event.params).int_value as round, 
paramValueByKey('type_of_game', event.params).string_value as type_of_game 
FROM `firebase-analytics-sample-data.android_dataset.app_events_20160607`, 
UNNEST(event_dim) as event 
WHERE event.name = 'round_completed' 
LIMIT 10;

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2017-12-12 11:03:19 nDakota

如何在BigQuery中選擇多個自定義Firebase事件參數？

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